.main-banner{
    width: 100%;
    height:700px;
    position: relative;
}
.scroll-banner{
    width:100%;
    height:100%;
    background-color: black;
}
.main-banner .scroll-banner a{
    width:100%;
    height: 100%;
    position: absolute;
    left:0;
    top:0;
}
.main-banner .scroll-banner .scroll-picture{
    height:100%;
    width:1903px;
    overflow: hidden;
    transition: visibility 1s,opacity 1s;
}
.search-index{
    position: relative;
    z-index: 1000;
    bottom: 150px;
    height: 60px;
    width: 650px;
    margin:0 auto;
    text-align: center;
}
.main-banner .search-index #search-form{
    height: 100%;
    z-index:100;
}
.main-banner .search-index .search-input{
    background-color: white;
    outline: none;
    height: 40px;
    font-size: 16px;
    vertical-align: bottom;
    width: 300px;
    padding:10px 15px;
    border: 0;
    opacity: 0.95;
}
.main-banner .search-index .search-button{
    background-color: rgb(91, 177, 91);
    opacity: 0.9;
    width:100px;
    height: 100%;
    cursor: pointer;
    outline: none;
    border:0;
    color:white;
    font-size: 18px;
    user-select: none;
}
.main-banner .search-index button:hover{
    opacity: 1;
}
.main-banner .search-index .control-square{
    display: inline-block;
    width:40px;
    height: 10px;
    position: relative;
    right: 0;
    bottom: 0;
    background-color:#a2a1a1;
    margin: 55px 5px;
    cursor: pointer;
    border-radius: 5px;
    z-index: 1000;
}